JP2562920Y2 - Teaching material solar cell set - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention is a teaching material for a solar cell, particularly a teaching material for elementary school students related to learning of a solar cell. The relationship between sunlight and power generated by the solar cell can be visually confirmed. Is to do so.

[0002]

2. Description of the Related Art As a teaching material for elementary school students to learn that a solar cell converts the radiant energy of the sun into electric energy and functions as a power source, for example, a motor is connected to the solar cell, For the motor,
There is a configuration in which a driven body driven by this output is connected.

In this device, when the solar cell is exposed to light, the driven body is driven, so that it is confirmed that the solar cell has converted sunlight into electric energy. However, in this type of teaching material, it is difficult to understand the relationship between the intensity of sunlight and the generated power. This is because the intensity (brightness) of sunlight cannot be visually confirmed because it is not specifically displayed. As a meter for displaying the intensity of sunlight, there is an illuminometer or the like, but it is difficult to use it in elementary school classes because it is too large.

[0004]

[Technical issues] The present invention is based on such a solar cell (1)
And a teaching material solar cell set comprising: a motor (M) operated by electric power generated from the solar cell (1); and a driven body (11) driven by an output from the motor (M).
It is an object of the present invention to make it easy to visually confirm the intensity of sunlight so that the relationship between the intensity of sunlight and the power generated from a solar cell can be more easily understood.

[0005]

The technical means of the present invention for solving the above-mentioned problem is as follows: "An optical display section made of a light-sensitive synthetic resin which, when absorbing ultraviolet light, changes color stepwise according to the amount of absorption.
(2) was provided near the solar cell (1). "

[0006]

The above technical means operates as follows. When the solar cell (1) is exposed to light, solar energy is converted into electric energy by the solar cell (1), and the generated power drives the motor (M), and the driven body is driven by the output from the motor (M). (11) is operated or driven. At this time, in the vicinity of the solar cell (1), an optical display section (2) made of a photosensitive synthetic resin that changes color stepwise by absorbing ultraviolet rays.
Is provided, the optical display section (2) changes color at the same time as the driven body (11) is driven.

More specifically, a solar cell (1) and an optical display
When strong light is applied to (2), the color of the light display section (2) is remarkably changed, and the driven body (11) is driven violently. Conversely, when weak light is applied to the solar cell (1) and the light display unit (2), the driving state of the follower (11) and the degree of discoloration of the light display unit (2) become weak. In this way, the light intensity is specifically displayed so that it can be easily confirmed by eyes.

[0008]

[Effect] The light intensity acting on the solar cell (1)
Since the degree of discoloration of (2) can be easily checked, the relationship between the degree of discoloration of the optical display unit (2) and the driving state of the driven body (11) is relatively related, so that the intensity of sunlight and the sun battery
The relationship with the power generated from (1) becomes easier to understand.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. In the first embodiment of the present invention, as shown in FIGS. 1 and 2, a solar cell (1) and a storage case (20) for accommodating a motor (M) are mounted on a base plate (10). The propeller (3) is adopted as the driven body (11) driven by the output from the motor (M),
The storage case (20) is made of a photosensitive synthetic resin that changes color when it absorbs sunlight (ultraviolet rays). That is, the storage case (20) itself functions as the optical display section (2).

As the photosensitive synthetic resin, for example,
"SUNRED PURPLE PPCOMPOUND", a product name for plastic products made by Taka Corporation, can be adopted. In this embodiment, by connecting both electrodes of the solar cell (1) to the respective terminals of the motor (M), if the entire base plate (10) is exposed to light, the storage case (20) discolors at the same time. The solar cell (1) converts solar energy into electric energy, and the propeller (3) rotates.

In particular, the light-sensitive synthetic resin employed in this embodiment has a property of gradually changing its color from colorless to reddish purple by absorbing ultraviolet rays of sunlight. By gradually increasing the intensity of light applied to the storage case (20), the storage case (20) changes from colorless and transparent to light purple and deep reddish purple. Therefore, in the case of this embodiment, the degree of discoloration of the storage case (20) and the propeller (3)
By considering the relationship with the rotation speed of the solar cell, the relationship between the intensity of sunlight and the power generated from the solar cell (1) can be visually confirmed.

The second embodiment shown in FIG.
A model car (4) is adopted as 1), and a solar cell (1) is mounted on the upper surface of the model car (4) and an optical display section (2) is provided near the model. The optical display section (2) may be made of the same resin as that used in the first embodiment. In this embodiment, when light is applied to the model car (4), the color of the light display section (2) changes, and at the same time, the power generated from the solar cell (1) causes the model car (4) to change its color.
The motor built in (4) is driven, and the model car (4) runs by the output from the motor. Therefore, in this embodiment, the relative degree of discoloration of the light display unit (2) and the traveling speed of the model car (4) are relatively associated with each other, so that the sunlight and the power generated from the solar cell (1) are compared. Relationships are easy to understand.

In the first and second embodiments,
Although the solar cell (1) and the optical display (2) were provided separately, FIG.
As shown in (1), it goes without saying that the case itself accommodating the solar cell (1) may be made of a photosensitive synthetic resin and used as the optical display section (2).

[Brief description of the drawings]

FIG. 1 is an explanatory view of a first embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is an explanatory view of a second embodiment.

FIG. 4 is an explanatory diagram of another embodiment.

[Explanation of symbols]

 (1) ... solar cell (11) ... follower (2) ... optical display (M) ... motor

Claims (1)

(57) [Scope of request for utility model registration] 1. A solar cell (1), a motor (M) operated by electric power generated from the solar cell (1), and the motor (M)
In the teaching material solar cell set comprising the driven body (11) driven by the output from the light source, the optical display unit (2) made of a photosensitive synthetic resin, which changes its color stepwise according to the amount of absorption when absorbing ultraviolet light. A teaching material solar cell set provided near the solar cell (1).